/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.channel.socket.nio;

import io.netty.channel.socket.InternetProtocolFamily;

import java.net.ProtocolFamily;
import java.net.StandardProtocolFamily;

/**
 * Helper class which convert the {@link InternetProtocolFamily}.
 */
final class ProtocolFamilyConverter
{

    private ProtocolFamilyConverter()
    {
        // Utility class
    }

    /**
     * Convert the {@link InternetProtocolFamily}. This MUST only be called on
     * jdk version >= 7.
     */
    public static ProtocolFamily convert(InternetProtocolFamily family)
    {
        switch (family)
        {
            case IPv4:
                return StandardProtocolFamily.INET;
            case IPv6:
                return StandardProtocolFamily.INET6;
            default:
                throw new IllegalArgumentException();
        }
    }
}
